Antiskid device



N 1932 A. G. FITZ GERALD I ANTISKID DEVICE Filed Feb. 9,. 1929 Invni or: 022 75510? GRizGeraM Patented Nov. 8, 1932 UNITED STATES ARTHUR G. FITZ GERALD, OF WEST! NEWTQN MASS ACHUSETTS- ANTISKID Application filed February 9, 19 29." SerialNmaSSflGO.

This invention relates to anti-skid devices for vehicles and aims to provide a novel and improved device having, among others, the

Fig. 5, a vertical cross-section on the line:

29 55, of Fig. 4:; and

Fig. 6 a detail, partly sectional view of a further modified form of rib member.

This invention has particular reference to non-metallic anti-skid members, where a cross-member as a strap of rubber or other suitable ice gripping material is used, and

in Fig. 1 such a member 1 is shown of a maximum width about midlength and tapering toward each end, the ends being secured to the usual side chains.

This member 1 is provided with anti-skid ribs 2 on its outer or tread face and they may be arranged in any desired and efiective manner.

It is well known that such non-metallic anti-skid devices have certain advantages over the metallic ones, such as chains or bars which are in common use, as the former are more quiet and less likely to slip on dry ice and snow, and wear longer. But on wet ice or wet roads, these non-metallic members are as likely to slip as the metallic ones.

Hence, I have conceived the novel construction in which the metal and non-metallic 5 members are combined in an effective manner.

On the strap or cross member 1, Fig. 1, I secure, near each end, a band 3, of metallic or hard but ductile material of any kind 0 which is of sufficient length to permit its downwardly the band on the end of the latter being struck up between the extensions ends to be bent about and beneath the ends of the strap 1 and secured thereto. In the present case the ends of-theband,

Figs. 1,2, 3, are providedwith teeth 4, which,"

after being brought beneath the strap 1 are v bent and driven inwardly into the strap and thus securely lockthe band 3 thereto.

The; outer or tread face of the band is provided with one or more, herein two, ribs 5 running lengthwise of the band. The strap is of such a length and the band is Y so positioned thereon that normally the band will be just above the portionof the tire tread that is in contact with the road, and the band will not, therefore, touch the road.

I WVhen, however, the car skids, the straps 1 in contact with the road will he slid in the opposite direction on the tire from that in which the tire is skidding and that will pull 0 strap on the side toward which the car is skidding until the band contacts with the road surface, when the ribs 5 which will be. positioned. across the skidding path will effectively aid in preventing further skidding of the car in that direction.

If preferred, of course the bands 3 can be riveted or otherwise secured to the strap 1, see Figs. 4, 5, as by screws 6, but in either case; they may readily be renewed if necessary. when worn out. v

1 The ribs 5 may be formed as desired, for instance in Fig. 1, they are shown as struck up from a flat blank 7, Fig. 3, the edges 8, 9, of the blank, Figs. 2, 3, beingalso turned inward to reinforce the ribs and form bases therefor. The extensions 10, 10, 11, 11, are struck up to form ends 13 of the ribs 5, the.

10, 10 and 11, 11 respectively.

In Fig. 6 the ribs are formed by casting the band and ribs or by otherwise fashioning them.

The complete strap with the bands 3 on either end provide the most complete and effectiveanti-skiddevice I know of and one that will outlast the conventional cross chain construction. 2

.My invention is not limited to the particular embodiment thereof described and illustrated. V

I claim:

1. An anti-skid device blank comprising a rectangular member having rectangular wings extending from the opposite sides near one end, the similar wings extended from the same sides'near the other ,end and between I said wings laterally extended tongues forked at their ends to provide teeth.

2. An anti-skid device comprisinga'keystone shaped plate with gripping prongs on each end constructed and arranged to be "I 7W driven into a strap, a triangular shaped rilo on each side of the plate, said plate adapted for attachment to a cross strap for wheel side chains. 7 a

In testimony whereof,

name to this specification.

Iliave signed my ARTHUR G. FITZV GERALD. 

